南美洲和非洲两块大陆轮廓几乎可以凸凹相接成一体，这能最好地证明（　　）

Last Sunday

    At about six in the morning I got up, then I brushed my teeth, washed my face. I often do some exercise before breakfast, but I didn't do that day. I was too hungry, I hurried to look for my breakfast. To my surprised, I didn't find anything to eat. I had to make some egg pies by myself. At about 8 o'clock, I reached at Mike's home. Nearly everyone has been there. Then we began to play. We played chess, played cards. Some of us played the computer games. But we all feel bored. At last, Mike got an idea. Then we went climbing. At top of the hill, we flew a kite. Unfortunately, the kite flew away. It was Mike's birthday present from his grandfather. He was so sad. At about sixteen, we went back.

已知等差数列{ an }的公差为d(d≠0)，且a₃+ a ₆+ a ₁₀+ a ₁₃=32，若a_m=8，则m为(    )

（1）${\log }_{5}35-2{\log }_5\frac{7}{3}+{\log }_{5}7-{\log }_{5}1.8-5^{{\log }_{5}2}$．

（2）已知α∈（0，π），$\sin \alpha +\cos \alpha =\frac{1}{5}$，求tanα．